I think Tesco is actually 99 ron. Sainsbury's is 97 ron I believe.
*Edit* Tesco do/did two types of super unleaded
99 Octane - 99 ron
Super Unleaded 97 - 97 ron
Bit old now (2005) so they may have swapped over to 99 ron everywhere by now. I know my local Tescos does the 99 stuff as that's what I use if I don't Optimax.
http://www.britishbioethanol.co.uk/IsolatedStorage/94175874-67b5-4c33-9f38-380233f14049/ContentAssets/Documents/Bioethanol/Media/PR05033UKSFIRSTSUPERFUELHITSTHEPUMPS_1.pdf
Tesco is actually 99 Ron, but it's the not often published MON rating this more important and significant... in this case the Tesco BioFuel scores highest then V Power then Ultimate...
I run with V Power mostly for the cleaning of the engine, having recently had to completely rebuild my engine after 75,000 hard miles the valves etc were in excellent condition - hence i'm happy to carry on with it. As an aside my car does about 40 miles more per tank (only 8 gallons) with it and is bit more responsive.
Most JDM cars have a desire for the higher octane fuels, and the euro equivalents tend to have a knock sensor so can adapt and as such would benefit from the V Power fuels etc... mine is having a mappable ECU fitted soon and will be mapped to run with V Power all the time...
On a car like a Type R, Clio 182 i'd recommend the better fuels.
I think with my 1.8 turbo that must be worth a go data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7may even go for a Revo trial to see if it's worth the money.
Sorry for the mini thread hijack data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7
God yes, a Turbo should benefit a lot.... IIRC the VAG turbo lumps do have a knock sensor aswell so the benefit should be more noticeable.
My car is a lowly NA 1.8 and prefers it data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7
I'll let you know how I get on.
Cheers buddy data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7
Run a few full tanks through and then go back to normal, that's when you'll really notice the difference.... things aren't instant in this game!
I think that's still the case.
I've not come across a Tesco's (ony tried a couple though lol) that have 99.
It's mostly 97.
Tis for me.Only 2-3p more and it means less lumpiness in the engine when compared to 95.
Also did 411 miles (Nottingham - Liege in Begium) on 1 tank (45 litres) the other week too with Sains Superdata:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7
What Car have recently researched this and found no difference in the so called 'Super fuels' and ordinary fuel....
This gives a report of the findings...
http://news.scotsman.com/uk.cfm?id=1548922007
I'm surprised they found no difference putting super unleaded in a diesel. data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7
Top Gear or 5th Gear, can't remember which, did a test on a dyno and found that it only made a difference with high performance cars again around 10-20bhp. And a Ford Focus or VW Diesel ain't high performance, well at least not in my book.
My old Cupra used to love Optimax & YES deffo go for the Revo trial data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7
My new FR TDi loves V-Power Diesel giving around 50 miles more per tank.
Then again i don't pay for Fuel, so i'll always stick with what i think is best for the car i'm driving without having to worry about the cost data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7